This Solicitation opportunity from Washington was posted on September 25, 2025. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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West Duwamish Wet Weather Storage

Closed

001462,6State & Local

Submission Closed09/30/2025, 12:00:00 AM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

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NAICS: 221320

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NAICS: 221320

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Solicitation # FA448627Q0002

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FA4486 765 Abs Conf

POSTED

16 days ago

DEADLINE

in 26 days

AI Contract Overview

The contract involves the construction of the West Duwamish Combined Sewer Overflow (CSO) Control Facility and the West Duwamish Interceptor Diversion Structure, aimed at improving wastewater management and stormwater overflow mitigation in the Washington area. Additionally, the project includes modifications to the existing Terminal 115 Overflow Structure and upgrades to the mechanical, electrical, and instrumentation and control (I&C) systems at the West Michigan Street Regulator Station. The scope of work is substantial, with an estimated value ranging from 50 million to 100 million dollars, reflecting its complexity and significance for regional infrastructure. The project was publicly solicited by King County, with a response deadline set for September 30, 2025. It is open to qualified entities, and interested parties can contact Julie Thiele for further information. The initiative aims to enhance the capacity and reliability of sewer overflow controls, ultimately supporting environmental protection and public health in the region. The contract underscores King County’s commitment to modernizing its wastewater infrastructure through large-scale construction and system upgrades, ensuring compliance with environmental standards and improving service resilience.

General Info

Agency

Washington → King County

NAICS

221320 - Sewage Treatment Facilities

Place of Performance

WA, USA

Set-Aside

NONE

Documents

KC001462 Addendum 2 for West Duwamish Wet Weather Storage

amendment

High

KC001462 Addendum 4 for West Duwamish Wet Weather Storage

amendment

High

KC001462 Addendum Number 5 - West Duwamish Wet Weather Storage

amendment

High

KC001462 Bidding Schedule Amendment 1

bidding-schedule

High

KC001462 Bidding Schedule for ITB

bidding-schedule

High

KC001462 West Duwamish Wet Weather Storage Addendum 1

amendment

High

KC001462 West Duwamish Wet Weather Storage - Addendum 6

amendment

High

KC001462 West Duwamish Wet Weather Storage ITB Volume 1

itb

High

KC001462-itb-vol-2.pdf

KC001462-itb-vol-7.pdf

AI Contract Breakdown

Uniform Contract Format

Timeline

PhaseClosed

PostedSep 25

Solicitation

Response DeadlineSep 30

Deadline has passed

Submission Closed

09/30/2025, 12:00:00 AM UTC

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Organization & Contact Information

AgencyWashington → King County

Contacts1 person available

OfficeN/A

Organization / AgencyWashington → King County

Office AddressN/A

Contacts

Julie Thiele

contact@example.gov

Full Description

Construct West Duwamish Combined Sewer Overflow (CSO) Control Facility and West Duwamish Interceptor Diversion Structure, modify existing Terminal 115 Overflow Structure and make improvements to existing mechanical, electrical, and instrumentation and control (I&C) systems to existing West Michigan Street Regulator Station.